Synonyms of significant in English:

significant


See US English definition of significant

See UK English definition of significant

See Spanish definition of importante

adjective

1‘a significant increase in sales’

SYNONYMS
notable, noteworthy, worthy of attention, remarkable, outstanding, important, of importance, of consequence, consequential
serious, crucial, weighty, material, appreciable, momentous, of moment, memorable, unforgettable, pronounced, marked, considerable, obvious, conspicuous, striking, glaring, signal, impressive, uncommon, unusual, rare, extraordinary, exceptional, particular, special
ANTONYMS

insignificant, minor

2‘he gave her a significant look’

SYNONYMS
meaningful, expressive, eloquent, informative, revealing, indicative, suggestive, symbolic, relevant, pregnant, knowing, telling, pithy, valid, purposeful
ANTONYMS

meaningless